I've yet to receive a nuke in a care package, or heard of anyone else receiving one. It might just be an infinitesimally small chance to receive one. Either way, even if there is a remote chance of getting one, you definitely don't have to worry about people popping care package nukes every few games, for a cheap win.
One thing that does annoy me, is that sniping in third person mode, is still the same as it is in first person matches. It seems kind of cheap, that you get to zoom in, and look through the scope first-person wise, when everyone else is running around aiming in third person mode. If anything, at least in my opinion, sniping in third person should just give you a lot more zoom than a normal gun. Still have it in third person, rather than the first person scope zoom. Obviously it'd be difficult to make a really accurate head shot across the map, but everyone else in third person mode faces that too. Maybe I'm just sad because I don't snipe much, but to me seems a tad un-even to everyone else using non-snipers in third person.